Yiyang Hunan's 2021 population is now estimated at 576,041. In 1950, the population of Yiyang Hunan was 82,570. Yiyang Hunan has grown by 17,426 since 2015, which represents a 3.12% annual change. These population estimates and projections come from the latest revision of the UN World Urbanization Prospects. These estimates represent the Urban agglomeration of Yiyang Hunan, which typically includes Yiyang Hunan's population in addition to adjacent suburban areas.